Eaton Powerware Series User Manual

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OPERATIONEATON BladeUPS® (12 kVA) User's Guide 164201649 Rev 4www.eaton.com/powerquality 75Setting the Battery Low Alarm LevelThe default Battery Low Alarm Level setting provides approximately 2.5 minutes ofbattery warning for a UPS. Additional EBMs installed in a parallel system can provide alonger warning time. To adjust the Battery Low Alarm Level setting to providedifferent warning times for a parallel system with additional EBMs installed, seeTable 5.Table 5. Suggested Battery Low Alarm Level SettingsWarning Time(in Minutes)Number of EBMsInstalledBattery Low Alarm Level (User Setting)20% Load 50% Load 100% Load21 1.783 1.821 1.8542 1.776 1.811 1.8313 1.772 1.798 1.8184 1.768 1.781 1.80531 1.805 1.848 1.8912 1.793 1.833 1.8593 1.787 1.820 1.8434 1.781 1.803 1.83141 1.822 1.868 1.9182 1.807 1.850 1.8833 1.789 1.836 1.8664 1.793 1.818 1.85051 1.835 1.884 1.9412 1.818 1.863 1.9033 1.799 1.849 1.8834 1.803 1.823 1.865NOTE Values are approximate.Running Automatic Battery TestsBattery tests rely on backfeeding the utility, using the utility as a load. Some sites maychoose to disable battery testing if their source is not capable of being backfed.Examples of such sources include generators, other UPSs, and other stiff or softsources.If a source is not capable of being backfed, the BladeUPS module will abort the test(due to utility failure) and will maintain the load and log the event. Furtherconsequences depend on the source (for example, another UPS feeding theBladeUPS module may trip off).NOTE Battery Tests will only run when the system is in High Efficiency Mode and the charger is in RestMode.